2813247 has 6 divisors (see below), whose sum is σ = 4063592. Its totient is φ = 1875492.

The previous prime is 2813227. The next prime is 2813249. The reversal of 2813247 is 7423182.

It is not a de Polignac number, because 2813247 - 2⁶ = 2813183 is a prime.

It is a Duffinian number.

2813247 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2813247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2813249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156283 + ... + 156300.

2^2813247 is an apocalyptic number.

2813247 is a deficient number, since it is larger than the sum of its proper divisors (1250345).

2813247 is a wasteful number, since it uses less digits than its factorization.

2813247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312589 (or 312586 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2813247 is about 1677.2736807093. The cubic root of 2813247 is about 141.1679001844.

The spelling of 2813247 in words is "two million, eight hundred thirteen thousand, two hundred forty-seven".